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66 - INSTALLATION 91477A755/B
adjustment screw next to the gas cock spindle
(depending on the model) until the correct
minimum flame is achieved.
Refit the knob and verify that the burner flame is
stable. Turn the knob rapidly from the maximum
to the minimum setting: The flame should not go
out. Repeat the operation on all gas cocks.
Lubricating the gas cocks
Over time the gas cocks may become difficult to
turn and get blocked. Clean them internally and
replace the lubrication grease.
Burner and nozzle characteristics tables
The nozzles not provided are available at Authorised Service Centres.
Lubrication of the gas cocks should be
performed by a specialised technician.
1 Natural Gas G20 - 20 mbar AUX SR R UR2
Rated heating capacity (kW) 1.0 1.8 2.9 4.2
Nozzle diameter (1/100 mm) 72 97 115 145
Pre-chamber (printed on nozzle) (X) (Z) (Y) (F3)
Reduced flow rate (W) 400 500 800 1200
2 Natural Gas G20 - 25 mbar AUX SR R UR2
Rated heating capacity (kW) 1.1 1.8 2.9 4.2
Nozzle diameter (1/100 mm) 72 94 110 145
Pre-chamber (printed on nozzle) (X) (Z) (H8) (H3)
Reduced flow rate (W) 400 500 800 1200
3 Natural Gas G25.1 - 25 mbar AUX SR R UR2
Rated heating capacity (kW) 1.1 1.8 3.0 4.1
Nozzle diameter (1/100 mm) 77 100 134 152
Pre-chamber (printed on nozzle) (F1) (Y) (F3) (F3)
Reduced flow rate (W) 400 500 800 1200
4 Natural Gas G2.350 - 13 mbar AUX SR R UR2
Rated heating capacity (kW) 1.0 1.75 2.9 3.7
Nozzle diameter (1/100 mm) 94 120 165 190
Pre-chamber (printed on nozzle) (Y) (Y) (F3) (F3)
Reduced flow rate (W) 400 500 800 1200
5 LPG G30/31 - 30/37 mbar AUX SR R UR2
Rated heating capacity (kW) 1.0 1.8 3.0 4.0
Nozzle diameter (1/100 mm) 50 65 85 100
Pre-chamber (printed on nozzle) ----
Reduced flow rate (W) 400 500 800 1300
Rated flow rate G30 (g/h) 73 131 218 291
Rated flow rate G31 (g/h) 71 129 214 286
6 LPG G30/31 - 37 mbar AUX SR R UR2
Rated heating capacity (kW) 1.1 1.9 3.0 4.2
Nozzle diameter (1/100 mm) 50 65 81 95
Pre-chamber (printed on nozzle) ----
Reduced flow rate (W) 450 550 900 1500
Rated flow rate G30 (g/h) 80 138 218 305
Rated flow rate G31 (g/h) 79 136 214 300
7 Town gas G110 – 8 mbar AUX SR R UR2
Rated heating capacity (kW) 1.0 1.75 2.8 3.3
Nozzle diameter (1/100 mm) 145 185 260 340
Pre-chamber (printed on nozzle) (/8) (/2) (/3) 0190
Reduced flow rate (W) 400 500 800 1000
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